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""" |
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Modifying of some solver default parameters is performed via |
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either kwargs for p.solve() (they can be solver or prob attributes) |
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or using oosolver (see examples/oosolver.py for more details). |
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""" |
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from numpy import * |
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from openopt import * |
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f = lambda x: (x[0]-1.5)**2 + sin(0.8 * x[1] ** 2 + 15)**4 + cos(0.8 * x[2] ** 2 + 15)**4 + (x[3]-7.5)**4 |
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lb, ub = -ones(4), ones(4) |
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|
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# example 1 |
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p = GLP(f, lb=lb, ub=ub, maxIter = 1e3, maxCPUTime = 3, maxFunEvals=1e5, fEnough = 80) |
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# solve() kwargs can include some prob settings (like maxTime) as well |
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r = p.solve('galileo', crossoverRate = 0.80, maxTime = 3, population = 15, mutationRate = 0.15) |
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|
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# example 2, via oosolver |
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solvers = [oosolver('ralg', h0 = 0.80, alp = 2.15, show = False), oosolver('ralg', h0 = 0.15, alp = 2.80, color = 'k')] |
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for i, solver in enumerate(solvers): |
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p = NSP(f, [0]*4, lb=lb, ub=ub, legend='ralg'+str(i+1)) |
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r = p.solve(solver, plot=True) |
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